US4545750A - Apparatus for vulcanizing a tire - Google Patents
Apparatus for vulcanizing a tire Download PDFInfo
- Publication number
- US4545750A US4545750A US06/579,427 US57942784A US4545750A US 4545750 A US4545750 A US 4545750A US 57942784 A US57942784 A US 57942784A US 4545750 A US4545750 A US 4545750A
- Authority
- US
- United States
- Prior art keywords
- supports
- tire
- members
- axially
- bead
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D30/00—Producing pneumatic or solid tyres or parts thereof
- B29D30/06—Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
- B29D30/0601—Vulcanising tyres; Vulcanising presses for tyres
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D30/00—Producing pneumatic or solid tyres or parts thereof
- B29D30/06—Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
- B29D30/0601—Vulcanising tyres; Vulcanising presses for tyres
- B29D30/0662—Accessories, details or auxiliary operations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D30/00—Producing pneumatic or solid tyres or parts thereof
- B29D30/06—Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
- B29D30/08—Building tyres
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D30/00—Producing pneumatic or solid tyres or parts thereof
- B29D30/06—Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
- B29D30/0601—Vulcanising tyres; Vulcanising presses for tyres
- B29D30/0606—Vulcanising moulds not integral with vulcanising presses
- B29D2030/0607—Constructional features of the moulds
- B29D2030/062—Means for sealing the tyre against the mould in the bead areas
- B29D2030/0621—Means for sealing the tyre against the mould in the bead areas to seal the bead portions against the mould i.e. by using pressing devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D30/00—Producing pneumatic or solid tyres or parts thereof
- B29D30/06—Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
- B29D30/0601—Vulcanising tyres; Vulcanising presses for tyres
- B29D30/0606—Vulcanising moulds not integral with vulcanising presses
- B29D2030/0607—Constructional features of the moulds
- B29D2030/062—Means for sealing the tyre against the mould in the bead areas
- B29D2030/0621—Means for sealing the tyre against the mould in the bead areas to seal the bead portions against the mould i.e. by using pressing devices
- B29D2030/0622—Means for sealing the tyre against the mould in the bead areas to seal the bead portions against the mould i.e. by using pressing devices the pressing devices being collapsable, e.g. annular elements consisting of a plurality of sectors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D30/00—Producing pneumatic or solid tyres or parts thereof
- B29D30/06—Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
- B29D30/0601—Vulcanising tyres; Vulcanising presses for tyres
- B29D30/0662—Accessories, details or auxiliary operations
- B29D2030/0666—Heating by using fluids
- B29D2030/0667—Circulating the fluids, e.g. introducing and removing them into and from the moulds; devices therefor
- B29D2030/0669—Circulating the fluids, e.g. introducing and removing them into and from the moulds; devices therefor the fluids being circulated by a turbine type pump associated with the mould, e.g. positioned in the mould
Definitions
- This invention relates to apparatus for vulcanizing a green tire, such as an automobile tire.
- U.S. Pat. No. 3,903,227 dated Sept. 2, 1975 discloses tire vulcanizing apparatus including a pair of split dies which form a closed space that receives the tire. The space is supplied with a pressure medium, and means for heating the medium.
- Such an apparatus requires the tire beads to closely fit the parts of the apparatus when the dies are closed, in order to keep the pressure medium from leaking from the space through the gaps between the beads and the parts forming the dies.
- pressing mechanisms are required for mechanically pressing the tire beads against the inner surfaces of the die parts.
- Such a pressing mechanism is also required, when the die apparatus is open, to be displaced so as not to obstruct the movement of a tire being placed into or removed from the dies. For this reason, the pressing mechanism as a whole should have a radius less than that of the tire beads, and when the dies are closed, it should extend to the radius of the beads for compression thereof.
- the pressing mechanism should also be readily adjustable in order to accommodate tires of various widths.
- Apparatus for vulcanizing a tire includes a pair of generally annular split dies which are axially movable relative to each other, and a pair of generally circular supports surrounded by the dies.
- the supports are engagable with the outer sides of the tire beads so as to form a closed space between the supports and within the tire.
- the space is supplied with a pressure medium which is heated during vulcanization.
- the supports are axially movable relative to each other and to the dies.
- Each of the supports has a plurality of pivotal members supported thereby adjacent its axially inner end, the members being pivotal in an axial plane passing through the axis of the supports.
- Each of the pivotal members has at least one spring-urged plate supported at the free end thereof.
- the pivotal members are spring-urged to retract radially inwardly of the supports.
- Each of the supports has a drive mounted thereon for pivoting the pivotal members radially outwardly, whereby the spring-urged plates compressively force the tire beads against the supports. This pressing of the tire beads is not associated with the axial movements of the dies.
- FIG. 1 is a fragmentary sectional view, showing one form of this invention in a closed position
- FIG. 2 is a view similar to FIG. 1, but showing the apparatus in an open position
- FIG. 3 is an enlarged fragmentary view taken on line 3--3 in FIG. 2;
- FIG. 4 is an enlarged view of a part of the apparatus, taken on the line 4--4 in FIG. 3;
- FIG. 5 is a sectional view taken on the line 5--5 of FIG. 4;
- FIG. 6 is a fragmentary view taken on the line 6--6 of FIG. 1;
- FIG. 7 is a fragmentary sectional view showing another form of the invention.
- the apparatus includes a pair of generally annular split dies 1 and 2 having an interior contour that fits the shape of a tire A to be vulcanized.
- the lower die 1 is fixed, and the upper die 2 is axially movable (by a conventional drive not shown) and engagable with the lower die, as shown in FIG. 1.
- the dies surround a pair of circular supports or bead plates 3 and 4, which are axially movable relative to the dies 1 and 2 and to each other by the above-mentioned drive.
- Each support 3 and 4 has an annular member 5 fixed to its periphery.
- Each annular member 5 has a circular rim 5a fixed therearound adjacent its axially inner end, and each rim 5a has a peripheral seat or groove 5b that opens axially inwardly and radially outwardly.
- Each annular member 5 further has a number of pivotal members 6 supported on its axially inner side at regular circumferential intervals. Each member 6 is pivotable on a pin 6c (FIG. 2) in an axial plane passing through the axis of the annular member 5.
- Each pivotal member 6 carries at least one shaft 8 which is movable along the axis of the shaft 8.
- the shaft 8 is supported on the free end of the member 6 and extends generally tangentially with respect to the pivotal movement of member 6.
- Each shaft 8 has a curved end plate 7 (FIGS. 4-6) fixed to its forward end, and each plate 7 is urged forwardly away from the free end of member 6 by a compression spring 9 (FIG. 3) provided between the plate 7 and the member 6.
- Each pivotal member 6 has a recess 6a (FIG. 2) formed in its outer or forward side between its pivoted and free ends, and an oblique or recessed surface 6b in the other side adjacent the pivoted end.
- the members 6 on each annular member 5 are surrounded by an endless tension spring 10 which fits in the recesses 6a, and the spring 10 tends to pivot the members 6 into their retracted or normal positions shown in FIG. 2.
- the endless springs 10 may instead be separate tension springs for each of the members 6.
- a drive 11 which includes an axially movable ring 14 provided on the axially inner side of the annular member 5.
- Each ring 14 is connected by rods 12 to hydraulic cylinders 13 fixed to the support 3 or 4, for axial movement of the ring 14 relative to the annular member 5.
- Each ring 14 has a flange 14a formed on its axially inner end for slidable and compressive engagement with the oblique sides 6b of the adjacent pivotal members 6, which are forced to pivot outwardly (see FIG. 1) when the rings 14 move axially toward each other, by means of hydraulic cylinders 13. When the rings 14 retract, they allow the members 6 to pivot into the normal position (FIG. 2), and disengage from them. Further, each member 14 has a groove in its outer periphery which engages a projection 18 on each member 6, and pulls the members 6 to the normal position.
- the shafts 8 on the pivotal members 6 are arranged on the same circle but they have alternately different lengths.
- the levels of the plates 7 are axially staggered by an amount approximating the thickness of the plates 7 between adjacent pivotal members, so that the adjacent plates do not interfere with each other. This enables the plates 7 to be wider than if they were not staggered, in order to substantially eliminate gaps between the plates when pressing the tire beads B (FIG. 1).
- the plate 7 on each shorter shaft 8 has blocks or tabs 7a (FIGS. 3-6) on both radially extending sides, which extend over and engage the adjacent plates 7 when they are pressing the tire beads, in order to align the plates 7 together on a circle for uniform pressure on the beads B.
- conventional heating means 15 is supported on the lower support 3 between the supports 3 and 4, and includes a plurality of heaters 15a mounted around a central fan 15b, which can be driven by a motor (not shown) connected to the lower end of the fan shaft.
- the heater 15a may take the form of conventional ring plate heaters which are axially spaced for the passage of air.
- stops 16 which limit the downward movement of upper support 4, to prevent the upper and lower pivotal members 6 from colliding.
- the apparatus operates as described below.
- each drive ring 14 is retracted or withdrawn on the associated annular member 5 away from the pivotal members 6.
- the members 6 are urged into the retracted positions (FIG. 2) by the springs 10, where they have an outer diameter that is smaller than the inner diameter of a green tire A.
- the plates 7 of the pivotal members are alternately offset as shown in FIG. 3 so that adjacent members do not interfere.
- a green tire A is then placed on the lower support 3 with the lower tire bead B resting in the seat 5b associated with the support 3. Subsequently, the upper support 4 is lowered until its bead seat 5b engages the upper bead B (FIG. 2).
- the drive rings 14 are then moved axially toward each other and the pivotal members 6, and the members 6 are forced to pivot outwardly against the force of springs 10, until the plates 7 engage the inner sides of tire beads B (see FIG. 1).
- the springs 9 are compressed and apply the compressive pressure on the tire beads to form a seal between the beads and the bead seats 5b.
- the drive rings 14 are moved by applying a pressurized fluid, such as air, in the cylinders 13 behind the pistons.
- the supports 3 and 4, the members 5 and the tire A, while spaced as in FIG. 2, are lowered until the lower annulus 5 and the tire A engage the lower die 1.
- the upper die 2 is then lowered into engagement with the lower die 1 and the tire. This forces the upper support 4 to further lower into the position in FIG. 1, where the whole apparatus is closed, because bolt heads 19 on the dies 1 and 2 engage ledges 20 on the members 5 and press them further together.
- the space C is then supplied with a pressure medium such as air through a passage (not shown) in the lower support 3, which is heated by the heating means 15 for vulcanization of the tire.
- a pressure medium such as air
- the cylinders 13 and the pressure may be arranged to apply an outward force on the pistons and thereby forcibly pivot the members 6 by the groove 17 and projection 18 arrangement.
- FIG. 7 shows another embodiment (only some of the lower parts being shown), wherein each support 3' has an annular rim 3a fixed therearound.
- An annulus 5' is movably supported in the support 3', and connected through rods 12' to hydraulic cylinders 13', for axially slidable movement relative to the support.
- the support 3' further has an axially inner, peripheral edge or ring 14' located radially within the annulus 5'.
- the slide annulus 5' carries a number of pivotal members 6' substantially the same as the members 6.
- tires having the same inner diameter but different axial widths can be vulcanized by adjusting the space between the supports 3 and 4.
- the pivotal members 6 can be readily replaced with others of appropriate size for the bead diameter.
- the dies 1 and 2 are also replaceable to meet various tire sizes. The parts operate smoothly without localized overstresses.
- the radially extending side edges 21 of the plates 7 that have the blocks 7a are slanted in one direction while the side edges of the other plates 7 have slants in the other direction. These slants enable the plates 7 that do not have the blocks to shift upwardly and smoothly engage the slanted edges of the other plates when the plates are pressed against the axially inner sides of the tire beads. Of course, differences in thicknesses of the beads are adjusted to by the springs 9 and the movable mounting of the plates 7.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Thermal Sciences (AREA)
- Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
This disclosure relates to apparatus for vulcanizing a tire, and includes a pair of generally annular split dies which are axially movable relative to each other, and a pair of generally circular supports surrounded by the dies. The supports include bead seats which are engagable with the axially outer sides of the tire beads so as to form a closed space between the supports and within the tire. The space is supplied with a pressure medium which is heated during vulcanization. The supports are axially movable relative to each other and to the dies. Each of the supports has mounted thereon a plurality of pivotal members which are movable into engagement with the axially inner sides of the tire beads. The pivotal members press the beads tightly against the bead seats in order to form a seal between the beads and the bead seats.
Description
This invention relates to apparatus for vulcanizing a green tire, such as an automobile tire.
U.S. Pat. No. 3,903,227, dated Sept. 2, 1975 discloses tire vulcanizing apparatus including a pair of split dies which form a closed space that receives the tire. The space is supplied with a pressure medium, and means for heating the medium.
Such an apparatus requires the tire beads to closely fit the parts of the apparatus when the dies are closed, in order to keep the pressure medium from leaking from the space through the gaps between the beads and the parts forming the dies. To achieve this, pressing mechanisms are required for mechanically pressing the tire beads against the inner surfaces of the die parts.
Such a pressing mechanism is also required, when the die apparatus is open, to be displaced so as not to obstruct the movement of a tire being placed into or removed from the dies. For this reason, the pressing mechanism as a whole should have a radius less than that of the tire beads, and when the dies are closed, it should extend to the radius of the beads for compression thereof.
The pressing mechanism should also be readily adjustable in order to accommodate tires of various widths.
It is a general object of this invention to provide vulcanizing apparatus including an improved pressing mechanism.
It is another object to provide such a pressing mechanism, which does not obstruct a tire being placed into or removed from the apparatus.
It is a further object to provide such a pressing mechanism, which accommodates various axial widths of tires.
Apparatus for vulcanizing a tire, embodying the present invention, includes a pair of generally annular split dies which are axially movable relative to each other, and a pair of generally circular supports surrounded by the dies. The supports are engagable with the outer sides of the tire beads so as to form a closed space between the supports and within the tire. The space is supplied with a pressure medium which is heated during vulcanization. The supports are axially movable relative to each other and to the dies. Each of the supports has a plurality of pivotal members supported thereby adjacent its axially inner end, the members being pivotal in an axial plane passing through the axis of the supports. Each of the pivotal members has at least one spring-urged plate supported at the free end thereof. The pivotal members are spring-urged to retract radially inwardly of the supports. Each of the supports has a drive mounted thereon for pivoting the pivotal members radially outwardly, whereby the spring-urged plates compressively force the tire beads against the supports. This pressing of the tire beads is not associated with the axial movements of the dies.
Preferred embodiments of this invention are shown in the accompanying drawings, wherein:
FIG. 1 is a fragmentary sectional view, showing one form of this invention in a closed position;
FIG. 2 is a view similar to FIG. 1, but showing the apparatus in an open position;
FIG. 3 is an enlarged fragmentary view taken on line 3--3 in FIG. 2;
FIG. 4 is an enlarged view of a part of the apparatus, taken on the line 4--4 in FIG. 3;
FIG. 5 is a sectional view taken on the line 5--5 of FIG. 4;
FIG. 6 is a fragmentary view taken on the line 6--6 of FIG. 1; and
FIG. 7 is a fragmentary sectional view showing another form of the invention.
With reference to FIGS. 1 and 2, the apparatus includes a pair of generally annular split dies 1 and 2 having an interior contour that fits the shape of a tire A to be vulcanized. The lower die 1 is fixed, and the upper die 2 is axially movable (by a conventional drive not shown) and engagable with the lower die, as shown in FIG. 1. The dies surround a pair of circular supports or bead plates 3 and 4, which are axially movable relative to the dies 1 and 2 and to each other by the above-mentioned drive. Each support 3 and 4 has an annular member 5 fixed to its periphery.
Each annular member 5 has a circular rim 5a fixed therearound adjacent its axially inner end, and each rim 5a has a peripheral seat or groove 5b that opens axially inwardly and radially outwardly. Each annular member 5 further has a number of pivotal members 6 supported on its axially inner side at regular circumferential intervals. Each member 6 is pivotable on a pin 6c (FIG. 2) in an axial plane passing through the axis of the annular member 5.
Each pivotal member 6 carries at least one shaft 8 which is movable along the axis of the shaft 8. The shaft 8 is supported on the free end of the member 6 and extends generally tangentially with respect to the pivotal movement of member 6. Each shaft 8 has a curved end plate 7 (FIGS. 4-6) fixed to its forward end, and each plate 7 is urged forwardly away from the free end of member 6 by a compression spring 9 (FIG. 3) provided between the plate 7 and the member 6.
Each pivotal member 6 has a recess 6a (FIG. 2) formed in its outer or forward side between its pivoted and free ends, and an oblique or recessed surface 6b in the other side adjacent the pivoted end. The members 6 on each annular member 5 are surrounded by an endless tension spring 10 which fits in the recesses 6a, and the spring 10 tends to pivot the members 6 into their retracted or normal positions shown in FIG. 2. The endless springs 10 may instead be separate tension springs for each of the members 6.
When the dies are closed, the members 6 on each annular member are forced to pivot forwardly and outwardly against the force of the spring 10 by a drive 11, which includes an axially movable ring 14 provided on the axially inner side of the annular member 5. Each ring 14 is connected by rods 12 to hydraulic cylinders 13 fixed to the support 3 or 4, for axial movement of the ring 14 relative to the annular member 5.
Each ring 14 has a flange 14a formed on its axially inner end for slidable and compressive engagement with the oblique sides 6b of the adjacent pivotal members 6, which are forced to pivot outwardly (see FIG. 1) when the rings 14 move axially toward each other, by means of hydraulic cylinders 13. When the rings 14 retract, they allow the members 6 to pivot into the normal position (FIG. 2), and disengage from them. Further, each member 14 has a groove in its outer periphery which engages a projection 18 on each member 6, and pulls the members 6 to the normal position.
As shown in FIG. 3, the shafts 8 on the pivotal members 6 are arranged on the same circle but they have alternately different lengths. In the normal position, without pressure, as shown in FIG. 2, the levels of the plates 7 are axially staggered by an amount approximating the thickness of the plates 7 between adjacent pivotal members, so that the adjacent plates do not interfere with each other. This enables the plates 7 to be wider than if they were not staggered, in order to substantially eliminate gaps between the plates when pressing the tire beads B (FIG. 1).
The plate 7 on each shorter shaft 8 has blocks or tabs 7a (FIGS. 3-6) on both radially extending sides, which extend over and engage the adjacent plates 7 when they are pressing the tire beads, in order to align the plates 7 together on a circle for uniform pressure on the beads B.
In FIGS. 1 and 2, conventional heating means 15 is supported on the lower support 3 between the supports 3 and 4, and includes a plurality of heaters 15a mounted around a central fan 15b, which can be driven by a motor (not shown) connected to the lower end of the fan shaft. The heater 15a may take the form of conventional ring plate heaters which are axially spaced for the passage of air.
Upwardly from the top of the heaters 15a extend stops 16 which limit the downward movement of upper support 4, to prevent the upper and lower pivotal members 6 from colliding.
The apparatus operates as described below.
In the open position (not shown) the dies 1 and 2 and the supports 3 and 4 are spaced apart wider than the positions shown in FIG. 2, and each drive ring 14 is retracted or withdrawn on the associated annular member 5 away from the pivotal members 6. The members 6 are urged into the retracted positions (FIG. 2) by the springs 10, where they have an outer diameter that is smaller than the inner diameter of a green tire A. The plates 7 of the pivotal members are alternately offset as shown in FIG. 3 so that adjacent members do not interfere.
A green tire A is then placed on the lower support 3 with the lower tire bead B resting in the seat 5b associated with the support 3. Subsequently, the upper support 4 is lowered until its bead seat 5b engages the upper bead B (FIG. 2).
The drive rings 14 are then moved axially toward each other and the pivotal members 6, and the members 6 are forced to pivot outwardly against the force of springs 10, until the plates 7 engage the inner sides of tire beads B (see FIG. 1). The springs 9 are compressed and apply the compressive pressure on the tire beads to form a seal between the beads and the bead seats 5b. This forms a tightly closed space C that includes the inside of tire A and the space between the supports 3 and 4. The drive rings 14 are moved by applying a pressurized fluid, such as air, in the cylinders 13 behind the pistons.
The supports 3 and 4, the members 5 and the tire A, while spaced as in FIG. 2, are lowered until the lower annulus 5 and the tire A engage the lower die 1. The upper die 2 is then lowered into engagement with the lower die 1 and the tire. This forces the upper support 4 to further lower into the position in FIG. 1, where the whole apparatus is closed, because bolt heads 19 on the dies 1 and 2 engage ledges 20 on the members 5 and press them further together.
The space C is then supplied with a pressure medium such as air through a passage (not shown) in the lower support 3, which is heated by the heating means 15 for vulcanization of the tire.
When the vulcanized and formed tire A is removed from the apparatus, it is necessary to retract the pivotal members 6 before the upper support 4 is moved away from the lower support 3. This is done by removing the pressure behind the pistons of the cylinders 13 which enables the tension springs 10 to contract and pivot the members 6 inwardly. If desired, the cylinders 13 and the pressure may be arranged to apply an outward force on the pistons and thereby forcibly pivot the members 6 by the groove 17 and projection 18 arrangement.
FIG. 7 shows another embodiment (only some of the lower parts being shown), wherein each support 3' has an annular rim 3a fixed therearound. An annulus 5' is movably supported in the support 3', and connected through rods 12' to hydraulic cylinders 13', for axially slidable movement relative to the support. The support 3' further has an axially inner, peripheral edge or ring 14' located radially within the annulus 5'. The slide annulus 5' carries a number of pivotal members 6' substantially the same as the members 6.
When the annulus 5' is retracted axially outwardly (downwardly) into the support 3', the edge 14' of support 3' compressively slides on the rear sloped edges 6b' of members 6', which are pivoted outwardly against the force of an endless tension spring 10', as shown by solid lines in FIG. 7. When the annulus 5' moves upwardly from the retracted position, the members 6' are retracted as shown by dash-dot lines in FIG. 7.
The other parts of the apparatus are substantially the same as in the embodiment of FIGS. 1-6.
Thus, according to this invention, tires having the same inner diameter but different axial widths can be vulcanized by adjusting the space between the supports 3 and 4. For different inner diameters of tire beads, the pivotal members 6 can be readily replaced with others of appropriate size for the bead diameter. The dies 1 and 2 are also replaceable to meet various tire sizes. The parts operate smoothly without localized overstresses.
As shown in FIGS. 3 and 6, the radially extending side edges 21 of the plates 7 that have the blocks 7a are slanted in one direction while the side edges of the other plates 7 have slants in the other direction. These slants enable the plates 7 that do not have the blocks to shift upwardly and smoothly engage the slanted edges of the other plates when the plates are pressed against the axially inner sides of the tire beads. Of course, differences in thicknesses of the beads are adjusted to by the springs 9 and the movable mounting of the plates 7.
Claims (10)
1. Apparatus for vulcanizing a tire, comprising a pair of generally annular split dies axially movable relative to each other, a pair of generally circular supports surrounded by said dies, said supports including bead seats adapted to engage the axially outer sides of the tire beads so as to form a closed space between said supports and within the tire, said space being adapted to be supplied with a pressure medium and heated, said supports being axially movable relative to each other and to said dies, a plurality of members pivotally mounted on each of said supports adjacent said bead seats, each of said pivotable members including a plate movably mounted adjacent the free end thereof, and compression spring means for urging said plate against the associated tire bead annular tension spring means mounted on said pivotable members of each of said supports for urging said pivotable members to pivot into a retracted position away from the tire bead, and drive means provided on said supports for urging said pivotable members into compressive engagement with the axially inner sides of said tire beads on said bead seats.
2. Apparatus according to claim 1, wherein said plates are staggered alternately when said pivotable members are retracted away from said tire beads.
3. Apparatus according to claim 1 wherein said drive means includes an annulus mounted on each of said supports, said annulus being adapted to be driven to axially move relative to the associated support, said annulus carrying said pivotable members, said support having an axially inner, peripheral edge for compressive engagement with said pivotable members, said edge being adapted to force said members to pivot outwardly when said annulus moves axially outwardly.
4. Apparatus according to claim 1, wherein at least some of said plates include blocks thereon for engaging adjacent plates.
5. Apparatus for vulcanizing a tire, comprising a pair of generally annular split dies axially movable relative to each other, a pair of generally circular removable supports spaced radially inwardly of said dies, said supports including bead seats adapted to engage the axially outer sides of the tire beads so as to form a closed space between said supports and within the tire, said space being adapted to be supplied with a pressure medium and heated, at least one member movably mounted on each of said supports adjacent said bead seats and movable into engagement with the axially inner sides of said tire beads, and drive means mounted on each of said supports and connected to said members associated therewith for moving said members.
6. Apparatus according to claim 5, wherein each of said movable members includes a plate movably mounted adjacent the free end thereof, and compression spring means for urging said plate against the associated tire bead, annular tension spring means mounted on said movable members of each of said supports for urging said movable members to pivot into a retracted position away from the tire bead.
7. Appparatus according to claim 1, wherein said drive means includes a ring mounted on each of said supports, said ring being adapted to be driven to axially move relative to the associated support, said ring being able to slidably engage said pivotable members.
8. Apparatus according to claim 7, wherein each of said pivotable members has a surface, which is so oblique that the slide of said ring on said surface varies the pressure on the tire bead.
9. Apparatus according to claim 7, wherein each of said pivotable members has a recess, said ring having a flange adapted to engage said recess so that the axially outward movement of said ring forces said pivotable members to pivot out of engagement with the tire bead.
10. Apparatus according to claim 3, wherein each of said pivotable members has an oblique surface for slidable engagement with said peripheral edge of said support, said surface being so oblique that the slide of said edge on said surface varies the pressure on the tire bead.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP58-44632 | 1983-03-14 | ||
JP58044632A JPS59167243A (en) | 1983-03-14 | 1983-03-14 | Tire encloser in tire vulcanizer |
Publications (1)
Publication Number | Publication Date |
---|---|
US4545750A true US4545750A (en) | 1985-10-08 |
Family
ID=12696795
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US06/579,427 Expired - Lifetime US4545750A (en) | 1983-03-14 | 1984-02-13 | Apparatus for vulcanizing a tire |
Country Status (9)
Country | Link |
---|---|
US (1) | US4545750A (en) |
EP (1) | EP0119753B1 (en) |
JP (1) | JPS59167243A (en) |
KR (1) | KR910005171B1 (en) |
AU (1) | AU2442684A (en) |
CA (1) | CA1228207A (en) |
DE (1) | DE3464023D1 (en) |
IN (1) | IN160324B (en) |
SU (1) | SU1264832A3 (en) |
Cited By (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4747765A (en) * | 1986-05-20 | 1988-05-31 | The Firestone Tire & Rubber Company | Mobile tire curing unit |
WO1989006189A1 (en) * | 1987-12-30 | 1989-07-13 | Hercules Tire And Rubber Company | Retread ring |
US4877468A (en) * | 1986-05-20 | 1989-10-31 | The Firestone Tire & Rubber Company | Hot tire forming method |
US5149545A (en) * | 1990-03-26 | 1992-09-22 | Mitsubishi Jukogyo Kabushiki Kaisha | Central mechanism of tire vulcanizer |
US20030194458A1 (en) * | 2002-04-16 | 2003-10-16 | Bailey David William | Collapsible mechanism for molding a tire bead |
US20040247717A1 (en) * | 2003-06-09 | 2004-12-09 | Kabushiki Kaisha Kobe Seiko Sho. | Vulcanization molding method and its vulcanizing machine |
US20050019440A1 (en) * | 2001-08-24 | 2005-01-27 | Tiziano Galigani | Curing machine for producing tires for road vehicles and the like |
US20100032079A1 (en) * | 2006-12-06 | 2010-02-11 | Pirelli Tyre S.P.A. | Process and apparatus for manufacturing tyres |
US20110132515A1 (en) * | 2008-08-04 | 2011-06-09 | Pirelli Tyre S.P.A. | Method of controlling a phase of moulding an annular fixing structure and a tyre including an annular fixing structure |
EP2708351A1 (en) * | 2012-09-13 | 2014-03-19 | The Goodyear Tire & Rubber Company | Tire loader, green tire preformer and tire loader system and methods for loading a green tire onto a tire press and for bringing the bead areas of a tire into alignment |
CN103660333A (en) * | 2012-09-13 | 2014-03-26 | 固特异轮胎和橡胶公司 | Method for preforming a green tire |
US8807976B1 (en) | 2012-09-13 | 2014-08-19 | The Goodyear Tire & Rubber Company | Tire bead area rotation apparatus |
WO2016173570A1 (en) * | 2015-04-30 | 2016-11-03 | Harburg-Freudenberger Maschinenbau Gmbh | Center mechanism for a tire vulcanizing machine |
US9839315B2 (en) | 2015-03-27 | 2017-12-12 | Polygroup Macau Limited (Bvi) | Multi-wire quick assemble tree |
US9843147B2 (en) | 2011-10-28 | 2017-12-12 | Polygroup Macau Limited (Bvi) | Powered tree construction |
US10124550B2 (en) * | 2014-11-19 | 2018-11-13 | Compagnie Generale Des Etablissements Michelin | Device and method for vulcanizing tires |
US10440795B2 (en) | 2016-03-04 | 2019-10-08 | Polygroup Macau Limited (Bvi) | Variable multi-color LED light string and controller for an artificial tree |
US10765245B2 (en) | 2009-07-14 | 2020-09-08 | Belgravia Wood Limited | Power pole for artificial tree apparatus with axial electrical connectors |
US10973355B2 (en) | 2009-07-14 | 2021-04-13 | Belgravia Wood Limited | Power pole for artificial tree apparatus with axial electrical connectors |
US10993572B2 (en) | 2009-07-14 | 2021-05-04 | Belgravia Wood Limited | Power pole for artificial tree apparatus with axial electrical connectors |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4120657A1 (en) * | 1991-06-22 | 1992-12-24 | Krupp Maschinentechnik | TIRE HEATING PRESS WITH INTERCHANGEABLE TIRE MOLDINGS |
JP2001009848A (en) * | 1999-04-28 | 2001-01-16 | Fuji Seiko Kk | Postcure inflator and method for cooling tire after vulcanization |
JP3404359B2 (en) * | 2000-05-11 | 2003-05-06 | 不二精工株式会社 | Post cure inflator and method of cooling tire after vulcanization |
CN109693326B (en) * | 2018-10-23 | 2021-11-23 | 合海橡塑装备制造有限公司 | Intelligent vulcanizing unit |
FR3123017A1 (en) | 2021-05-19 | 2022-11-25 | Compagnie Generale Des Etablissements Michelin | Membraneless mold and curing process optimized for pneumatics |
Citations (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2812546A (en) * | 1956-06-12 | 1957-11-12 | Mcneil Machine & Eng Co | Apparatus for curing pneumatic tires |
US2834049A (en) * | 1954-09-02 | 1958-05-13 | Robbins Tire And Rubber Compan | Tire retreading mold with mechanical tire expander assembly |
US2901771A (en) * | 1957-03-18 | 1959-09-01 | Adolf H Frohlich | Bagless vulcanizing press |
US2904832A (en) * | 1955-08-24 | 1959-09-22 | Cleveland Trust Co | Expandable bead ring for vulcanizing presses |
US2913765A (en) * | 1956-02-15 | 1959-11-24 | Cleveland Trust Co | Hinged inner bead forming and sealing ring for vulcanizing presses |
US2928119A (en) * | 1956-12-10 | 1960-03-15 | James C Heintz Company | Tire handling apparatus for retreading molds |
US2939175A (en) * | 1956-02-13 | 1960-06-07 | Cleveland Trust Co | Two-way expandable inner bead forming ring for vulcanizing presses |
US2959815A (en) * | 1955-06-17 | 1960-11-15 | Nat Rubber Machinery Co | Tire curing press |
US2997740A (en) * | 1959-01-07 | 1961-08-29 | Mcneil Machine & Eng Co | Press for shaping and curing pneumatic tires |
US3012277A (en) * | 1958-02-13 | 1961-12-12 | Mcneil Machine & Eng Co | Center mechanism for tire presses |
US3153263A (en) * | 1957-11-07 | 1964-10-20 | Nat Rubber Machinery Co | Tire curing press |
US3506748A (en) * | 1966-01-18 | 1970-04-14 | Goodrich Co B F | Tire curing apparatus and method |
DE2161939A1 (en) * | 1971-12-14 | 1973-06-20 | Krupp Gmbh | Pneumatic tyre mfr - dispensing with inflatable bags to reduce heating period |
DE2309001A1 (en) * | 1973-02-23 | 1974-09-05 | Brunotte & Niemeyer Maschinenf | Tyre mould with universal bead ring - having two rings sliding on each other |
US3903227A (en) * | 1972-04-19 | 1975-09-02 | Kobe Machinery Co | Method for vulcanization-pressing of vehicular tire treads |
US3948591A (en) * | 1972-02-08 | 1976-04-06 | Semperit Aktiengesellschaft | Apparatus for the bellowless vulcanization of tire blanks |
US4068989A (en) * | 1976-09-03 | 1978-01-17 | Nrm Corporation | Tire curing press |
US4181483A (en) * | 1971-06-16 | 1980-01-01 | Semperit Aktiengesellschaft | Apparatus for the bellowless vulcanization of tire blanks |
US4236883A (en) * | 1979-07-05 | 1980-12-02 | Nrm Corporation | Tire press |
US4400342A (en) * | 1981-03-23 | 1983-08-23 | The Goodyear Tire & Rubber Company | Bladderless, clampless curing |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2303853A1 (en) * | 1972-02-08 | 1973-08-16 | Semperit Gmbh | METHOD AND DEVICE FOR VULCANIZING BLADE TIRES |
JPS57159635A (en) * | 1981-03-26 | 1982-10-01 | Kazumasa Sarumaru | Device for enclosing tire body in vulcanization of vehicular tire |
-
1983
- 1983-03-14 JP JP58044632A patent/JPS59167243A/en active Granted
-
1984
- 1984-02-09 AU AU24426/84A patent/AU2442684A/en not_active Abandoned
- 1984-02-10 IN IN100/CAL/84A patent/IN160324B/en unknown
- 1984-02-13 US US06/579,427 patent/US4545750A/en not_active Expired - Lifetime
- 1984-02-17 EP EP84301051A patent/EP0119753B1/en not_active Expired
- 1984-02-17 DE DE8484301051T patent/DE3464023D1/en not_active Expired
- 1984-02-27 KR KR1019840000957A patent/KR910005171B1/en not_active IP Right Cessation
- 1984-03-12 CA CA000449373A patent/CA1228207A/en not_active Expired
- 1984-03-13 SU SU843711225A patent/SU1264832A3/en active
Patent Citations (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2834049A (en) * | 1954-09-02 | 1958-05-13 | Robbins Tire And Rubber Compan | Tire retreading mold with mechanical tire expander assembly |
US2959815A (en) * | 1955-06-17 | 1960-11-15 | Nat Rubber Machinery Co | Tire curing press |
US2904832A (en) * | 1955-08-24 | 1959-09-22 | Cleveland Trust Co | Expandable bead ring for vulcanizing presses |
US2939175A (en) * | 1956-02-13 | 1960-06-07 | Cleveland Trust Co | Two-way expandable inner bead forming ring for vulcanizing presses |
US2913765A (en) * | 1956-02-15 | 1959-11-24 | Cleveland Trust Co | Hinged inner bead forming and sealing ring for vulcanizing presses |
US2812546A (en) * | 1956-06-12 | 1957-11-12 | Mcneil Machine & Eng Co | Apparatus for curing pneumatic tires |
US2928119A (en) * | 1956-12-10 | 1960-03-15 | James C Heintz Company | Tire handling apparatus for retreading molds |
US2901771A (en) * | 1957-03-18 | 1959-09-01 | Adolf H Frohlich | Bagless vulcanizing press |
US3153263A (en) * | 1957-11-07 | 1964-10-20 | Nat Rubber Machinery Co | Tire curing press |
US3012277A (en) * | 1958-02-13 | 1961-12-12 | Mcneil Machine & Eng Co | Center mechanism for tire presses |
US2997740A (en) * | 1959-01-07 | 1961-08-29 | Mcneil Machine & Eng Co | Press for shaping and curing pneumatic tires |
US3506748A (en) * | 1966-01-18 | 1970-04-14 | Goodrich Co B F | Tire curing apparatus and method |
US4181483A (en) * | 1971-06-16 | 1980-01-01 | Semperit Aktiengesellschaft | Apparatus for the bellowless vulcanization of tire blanks |
DE2161939A1 (en) * | 1971-12-14 | 1973-06-20 | Krupp Gmbh | Pneumatic tyre mfr - dispensing with inflatable bags to reduce heating period |
US3948591A (en) * | 1972-02-08 | 1976-04-06 | Semperit Aktiengesellschaft | Apparatus for the bellowless vulcanization of tire blanks |
US3903227A (en) * | 1972-04-19 | 1975-09-02 | Kobe Machinery Co | Method for vulcanization-pressing of vehicular tire treads |
DE2309001A1 (en) * | 1973-02-23 | 1974-09-05 | Brunotte & Niemeyer Maschinenf | Tyre mould with universal bead ring - having two rings sliding on each other |
US4068989A (en) * | 1976-09-03 | 1978-01-17 | Nrm Corporation | Tire curing press |
US4236883A (en) * | 1979-07-05 | 1980-12-02 | Nrm Corporation | Tire press |
US4400342A (en) * | 1981-03-23 | 1983-08-23 | The Goodyear Tire & Rubber Company | Bladderless, clampless curing |
Cited By (47)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4747765A (en) * | 1986-05-20 | 1988-05-31 | The Firestone Tire & Rubber Company | Mobile tire curing unit |
US4877468A (en) * | 1986-05-20 | 1989-10-31 | The Firestone Tire & Rubber Company | Hot tire forming method |
WO1989006189A1 (en) * | 1987-12-30 | 1989-07-13 | Hercules Tire And Rubber Company | Retread ring |
US4850834A (en) * | 1987-12-30 | 1989-07-25 | The Hercules Tire And Rubber Company | Retread ring |
US5149545A (en) * | 1990-03-26 | 1992-09-22 | Mitsubishi Jukogyo Kabushiki Kaisha | Central mechanism of tire vulcanizer |
US7172396B2 (en) * | 2001-08-24 | 2007-02-06 | Cima Impianti S.P.A. | Curing machine for producing tires for road vehicles and the like |
US20050019440A1 (en) * | 2001-08-24 | 2005-01-27 | Tiziano Galigani | Curing machine for producing tires for road vehicles and the like |
US6726460B2 (en) * | 2002-04-16 | 2004-04-27 | Michelin Recherche Et Technique S.A. | Collapsible mechanism for molding a tire bead |
US20030194458A1 (en) * | 2002-04-16 | 2003-10-16 | Bailey David William | Collapsible mechanism for molding a tire bead |
US20040247717A1 (en) * | 2003-06-09 | 2004-12-09 | Kabushiki Kaisha Kobe Seiko Sho. | Vulcanization molding method and its vulcanizing machine |
US7435069B2 (en) * | 2003-06-09 | 2008-10-14 | Kabushiki Kaisha Kobe Seiko Sho | Vulcanizing machine |
US20100032079A1 (en) * | 2006-12-06 | 2010-02-11 | Pirelli Tyre S.P.A. | Process and apparatus for manufacturing tyres |
US8828168B2 (en) * | 2008-08-04 | 2014-09-09 | Pirelli Tyre S.P.A. | Method of controlling a phase of moulding an annular fixing structure and a tyre including an annular fixing structure |
US20110132515A1 (en) * | 2008-08-04 | 2011-06-09 | Pirelli Tyre S.P.A. | Method of controlling a phase of moulding an annular fixing structure and a tyre including an annular fixing structure |
US9724884B2 (en) | 2008-08-04 | 2017-08-08 | Pirelli Tyre S.P.A. | Equipment for moulding and curing a green tyre |
US10893768B2 (en) | 2009-07-14 | 2021-01-19 | Belgravia Wood Limited | Power pole for artificial tree apparatus with axial electrical connectors |
US10993572B2 (en) | 2009-07-14 | 2021-05-04 | Belgravia Wood Limited | Power pole for artificial tree apparatus with axial electrical connectors |
US11712126B2 (en) | 2009-07-14 | 2023-08-01 | Belgravia Wood Limited | Power pole for artificial tree apparatus with axial electrical connectors |
US11096511B2 (en) | 2009-07-14 | 2021-08-24 | Belgravia Wood Limited | Power pole for artificial tree apparatus with axial electrical connectors |
US11096512B2 (en) | 2009-07-14 | 2021-08-24 | Belgravia Wood Limited | Power pole for artificial tree apparatus with axial electrical connectors |
US11083319B2 (en) | 2009-07-14 | 2021-08-10 | Belgravia Wood Limited | Power pole for artificial tree apparatus with axial electrical connectors |
US11013356B2 (en) | 2009-07-14 | 2021-05-25 | Belgravia Wood Limited | Power pole for artificial tree apparatus with axial electrical connectors |
US10993571B2 (en) | 2009-07-14 | 2021-05-04 | Belgravia Wood Limited | Architecture for routing multi-channel commands via a tree column |
US10973355B2 (en) | 2009-07-14 | 2021-04-13 | Belgravia Wood Limited | Power pole for artificial tree apparatus with axial electrical connectors |
US10939777B2 (en) | 2009-07-14 | 2021-03-09 | Belgravia Wood Limited | Power pole for artificial tree apparatus with axial electrical connectors |
US10765244B2 (en) | 2009-07-14 | 2020-09-08 | Belgravia Wood Limited | Power pole for artificial tree apparatus with axial electrical connectors |
US10765245B2 (en) | 2009-07-14 | 2020-09-08 | Belgravia Wood Limited | Power pole for artificial tree apparatus with axial electrical connectors |
US9912109B2 (en) | 2011-10-28 | 2018-03-06 | Polygroup Macau Limited (Bvi) | Powered tree construction |
US11967790B2 (en) | 2011-10-28 | 2024-04-23 | Polygroup Macau Limited (Bvi) | Powered tree construction with rotation limiting |
US11799251B2 (en) | 2011-10-28 | 2023-10-24 | Polygroup Macau Limited (Bvi) | Powered tree construction with rotation limiting |
US10404019B2 (en) | 2011-10-28 | 2019-09-03 | Polygroup Macau Limited (Bvi) | Powered tree construction |
US10777949B2 (en) | 2011-10-28 | 2020-09-15 | Polygroup Macau Limited (Bvi) | Powered tree construction |
US10522954B1 (en) | 2011-10-28 | 2019-12-31 | Polygroup Macau Limited (Bvi) | Powered tree construction |
US9843147B2 (en) | 2011-10-28 | 2017-12-12 | Polygroup Macau Limited (Bvi) | Powered tree construction |
US10985513B2 (en) | 2011-10-28 | 2021-04-20 | Polygroup Macau Limited (Bvi) | Powered tree construction with rotation limiting |
EP2708350A1 (en) * | 2012-09-13 | 2014-03-19 | The Goodyear Tire & Rubber Company | Green tire preformer apparatus and method for preforming a green tire |
US8807976B1 (en) | 2012-09-13 | 2014-08-19 | The Goodyear Tire & Rubber Company | Tire bead area rotation apparatus |
CN103660333B (en) * | 2012-09-13 | 2018-01-09 | 固特异轮胎和橡胶公司 | Method for preshaped crude tyre |
EP2708351A1 (en) * | 2012-09-13 | 2014-03-19 | The Goodyear Tire & Rubber Company | Tire loader, green tire preformer and tire loader system and methods for loading a green tire onto a tire press and for bringing the bead areas of a tire into alignment |
CN103660333A (en) * | 2012-09-13 | 2014-03-26 | 固特异轮胎和橡胶公司 | Method for preforming a green tire |
US10124550B2 (en) * | 2014-11-19 | 2018-11-13 | Compagnie Generale Des Etablissements Michelin | Device and method for vulcanizing tires |
US9839315B2 (en) | 2015-03-27 | 2017-12-12 | Polygroup Macau Limited (Bvi) | Multi-wire quick assemble tree |
US10842306B2 (en) | 2015-03-27 | 2020-11-24 | Polygroup Macau Limited (Bvi) | Multi-wire quick assemble tree |
WO2016173570A1 (en) * | 2015-04-30 | 2016-11-03 | Harburg-Freudenberger Maschinenbau Gmbh | Center mechanism for a tire vulcanizing machine |
US11019692B2 (en) | 2016-03-04 | 2021-05-25 | Polygroup Macau Limited (Bvi) | Variable multi-color LED light string and controller for an artificial tree |
US10440795B2 (en) | 2016-03-04 | 2019-10-08 | Polygroup Macau Limited (Bvi) | Variable multi-color LED light string and controller for an artificial tree |
US10728978B2 (en) | 2016-03-04 | 2020-07-28 | Polygroup Macau Limited (Bvi) | Variable multi-color LED light string and controller for an artificial tree |
Also Published As
Publication number | Publication date |
---|---|
AU2442684A (en) | 1984-09-20 |
DE3464023D1 (en) | 1987-07-09 |
CA1228207A (en) | 1987-10-20 |
JPH0316249B2 (en) | 1991-03-05 |
JPS59167243A (en) | 1984-09-20 |
KR840007849A (en) | 1984-12-11 |
EP0119753B1 (en) | 1987-06-03 |
IN160324B (en) | 1987-07-04 |
KR910005171B1 (en) | 1991-07-23 |
SU1264832A3 (en) | 1986-10-15 |
EP0119753A1 (en) | 1984-09-26 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US4545750A (en) | Apparatus for vulcanizing a tire | |
EP0368546B1 (en) | Bladderless tyre moulding apparatus | |
US3999907A (en) | Adjustable tire retread curing matrix | |
US4325764A (en) | Drum and method of shaping a radial tire | |
US3464090A (en) | Tire curing press | |
JP4884934B2 (en) | Tire vulcanizer | |
JP6701349B2 (en) | Tire vulcanizing mold, tire vulcanizing apparatus, and tire manufacturing method | |
US20170305089A1 (en) | Method of controlling a phase of moulding an annular fixing structure and a tyre including an annular fixing structure | |
US4274897A (en) | Method and apparatus for vulcanizing tires | |
US5464489A (en) | Method for manufacturing a green radial tire using a transfer unit that is movable during pressing | |
US5129802A (en) | Apparatus for vulcanizing pneumatic vehicle tires | |
US4758401A (en) | Method for vulcanizing pneumatic vehicle tires | |
US5490897A (en) | Tire former capable of expanding and contracting in an axial direction | |
US2834984A (en) | Vulcanizing apparatus | |
US2741799A (en) | Method of making tires | |
US3948591A (en) | Apparatus for the bellowless vulcanization of tire blanks | |
US5494551A (en) | Segmented matrix apparatus for forming a tread pattern in a retread tire | |
JPH07232329A (en) | Tire vulcanizing press | |
US2343724A (en) | Method of retreading tires | |
JP4138162B2 (en) | Split mold equipment for tire vulcanization | |
US3581345A (en) | Tire curing press bladder assembly | |
US4843871A (en) | Method and apparatus for receiving a tire | |
US3643315A (en) | Apparatus for driving antiskid studs into the tread surface of tires | |
JPS6337697B2 (en) | ||
CA1084220A (en) | Retreading mold |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
STCF | Information on status: patent grant |
Free format text: PATENTED CASE |
|
FPAY | Fee payment |
Year of fee payment: 4 |
|
FEPP | Fee payment procedure |
Free format text: PAYOR NUMBER ASSIGNED (ORIGINAL EVENT CODE: ASPN); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY Free format text: PAT HLDR NO LONGER CLAIMS SMALL ENT STAT AS INDIV INVENTOR (ORIGINAL EVENT CODE: LSM1); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY |
|
FPAY | Fee payment |
Year of fee payment: 8 |
|
FPAY | Fee payment |
Year of fee payment: 12 |